Topic: Oracle Certified Professional Exams (OCP & OCA) >> Which two statements regarding the EMP_ID_SEQ sequence are true?
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| Title: Which two statements regarding the EMP_ID_SEQ sequence are true? |
| naidu |
Posted: Dec 26, 2006 06:59:34 AM |
Total Post: 85
Joined: Nov, 2006
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Examine the structure of the EMPLOYEES table:
EMPLOYEE_ID NUMBER NOT NULL, Primary Key
EMP_NAME VARCHAR2 (30)
JOB_ID NUMBER\
SAL NUMBER
MGR_ID NUMBER References EMPLOYEE_ID column
DEPARTMENT_ID NUMBER Foreign key to DEPARTMENT_ID column of the DEPARTMENTS table
You created a sequence called EMP_ID_SEQ in order to populate sequential values for the EMPLOYEE_ID column of the EMPLOYEES table.
Which two statements regarding the EMP_ID_SEQ sequence are true? (Choose two.)
A. You cannot use the EMP_ID_SEQ sequence to populate the JOB_ID column.
B. The EMP_ID_SEQ sequence is invalidated when you modify the EMPLOYEE_ID column.
C. The EMP_ID_SEQ sequence is not affected by modifications to the EMPLOYEES table.
D. Any other column of NUMBER data type in your schema can use the EMP_ID_SEQ sequence.
E. The EMP_ID_SEQ sequence is dropped automatically when you drop the EMPLOYEES table.
F. The EMP_ID_SEQ sequence is dropped automatically when you drop the EMPLOYEE_ID column.
Answer:
Plz help me on this Question
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 Jayanta |
| Posted: Dec 26, 2006 01:50:41 PM |  |
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Total Post: 479
Joined: Feb, 2006
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